<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      Array.prototype.mySome = function (callBack) {
        const flag = null
        for (let i = 0; i < this.length; i++) {
          flag = callBack(this[i], i, this)
          if (flag) {
            return true
          }
        }
        return false
      }

      const b = arr.mySome(function (item, index, arr) {
        console.log(item)
        return item > 1
      })

      console.log(b) // true
    </script>
  </body>
</html>
